Picker-checking means for looms.



PATENTED SEPT. 6, 1904,

B. S. STIMPSON. PIOKER CHECKING MEANS FOR LOOMS.

APPLIUATION FILED MAY 25, 1904.

N0 MODEL.

NITED STATES Patented September 6, 1904.

PATENT OFFICE.

EDIVARI) S. STIMPSON, OF HOPFDALE, FLXSSAOIIUSEITS, ASSIGNOR TO DRAPER COMPANY, OF l-IOPEDALF, MASSAUHUSETTS, A CORPORA- TION OF MAINE.

PlCKER-CHEOKING MEANS FOR LOOIVIS.

SPECIFICATION forming part of Letters Patent No. 769,669, dated September 6, 1904. Application filed May 25, 1904. Serial No. 209,638. (No model.)

To mil [1171/0710 it vii/my concern:

Be it known that I, EDWARD S. S'rIMPsoN, a citizen of the United States, and a resident of Hopedale, county of \Vorcester, State of Massachusetts, have invented an Improvement in Picker-Checking Means for Looms, of which the following description. in connection with the accompanying drawings, is a specification, like characters on the drawings representing like parts.

This invention has for its object the production of novel means for checking the outward stroke of a loom-picker when the same is struck by the incoming shuttle, whereby rebound of the picker is prevented.

In accordance with my invention fixed and movable butters are located opposite each other in such position that the picker on its outward stroke must pass between them, the movable butter being yieldingly held in the path of the picker, and I have provided novel means for adjusting the position of the movable buffer to thereby vary the resistance to the passage of the picker between the buffer.

The various novel features of my invention will be fully described in the subjoined specilication, and particularly pointed out in the following claims.

Figure 1 is a top or plan view of one end of a loom-lay having a shuttle-box thereon with one embodiment of my invention applied thereto, the parts being shown in normal position. Fig. 2 is a front elevation of a portion of the apparatus illustrated in Fig. 1. Fig. 3 is a transverse section on the irregular line 3 3, Fig. 1, looking toward the left. Fig. 4 is a front elevation of the movable buffer and its supporting-stand, the two parts being separated vertically. Fig. 5 is an under side view of the movable buffer, and Fig. 6 is a top or plan view of the stand therefor.

In Fig. I the lay A has a shuttle-box thereon having a fixed front wall B and a top or cover plate B, a binder B being pivotally mounted at its outer end at 7/ and cooperating with a binder-finger 7) of the usual protector mechanism, the lay being longitudinally slotted at A Fig. l, for the picket stick P, having mounted thereon a pickerI all operating in well-known manner.

An ear 1 is extended rearwardly from the lay beyond the outer end of the shuttle-box to receive a bolt 2, which is passed through an elongated slot 3 in the foot & of a T-shaped casting, the uprighthead 5 thereof being elongated and flat (see Fig. l) and constituting a fixed butler parallel to and adjacent one side of the picker-path. The foot 4L rests on the top of the lay and passes rearwardly through a recess 7) in the under side of the binder, the slot 3 permitting the buffer to be properly adjusted with relation to the picker-path, after which the nut 6 on the bolt 2 is set up, clamping the buffer securely in position. On each outward stroke of the picker its rear face wipes over the upright elongated face of the buffer 5.

I have arranged a spring-controlled movable bufl'er to cooperate with the outer face of the picker, said movable buffer being located opposite the fixed buffer, so that the picker must pass between them, and means are provided to adjust the movable buffer so as to vary the resistance offered to the passage of the picker.

An ear 7 projects from the front of the lay beyond the outer end of the box-wall B, (see Figs. 1 and 2.) and on this ear a stand 8 is rigidly yet adjustably secured by a bolt 9, passed through a slot 10 in the stand and clamped by a nut 11. The shape of the stand is shown most clearly in Fig. 6, and it has at its outer end an upright hollow cylindrical boss 12 and at its inner end an upturned lug 13, provided with a socket let in its rear face. By loosening the nut 11 the stand can be moved toward or from the picker-path, and it can also be angularly adjusted on the bolt 9 as a center for a purpose to be referred to, the the stand, with its boss and lug, being made as a casting. The movable buffer is also made as a casting and it comprises a top plate 15, having a eownturned longitudinally-convex flange 16 at its rear edge constituting the buffer prope' while a hub 17 depends from the ctier end: the top plate. Along the outer edge of the latter a shallow lip or stop 18 depends, it having a recess 19 (see Figs. 4 and 5) opposite a socketed boss 20, formed on the laufi'er-flange 16.

A stiff spiral spring 8X (see Figs. 1 and 3 is seated in the boss 20, its insertion being facilitated by the recess 19, and then the hub 17 is slipped onto the upturned boss 12 of the stand, the lip 18 overhanging the lug 13 of the latter, while the spring is compressed until its free end can be snapped into the socket 14. This is well shown in Fig. 1, wherein the parts are assembled, and it will be seen that the bufier 16 is fulcrumed at its outer end on the stand 8, while its inner end is forced rearward by the expansive action of the spring 8X, such movement being limited by engagement of the lip 18 and upright lug 13, as illustrated in Fig. 3.

In order to retain the movable buffer on the stand, aheaded stud 21 is passed down through the boss 12 and secured by a nut 22, the stand being recessed beneath the boss at 23 to receive the nut, Figs. 1 and 4, and preferably a washer 24% is interposed between the head of the stud and the top of the boss, which projects slightly above the hub 17 to prevent binding the latter and its connected buffer 16. A wearpiece 12 of leather or other suitable material, may be secured to the picker P over its front face to wipe over the movable buffer. When the movable buffer is properly mounted on its stand, as described, the stand is then adjusted so that the outer portion of the buffer 16 will project more or less into the path of the picker, as shown in Fig. 1, the inner end of the buffer flaring to present a wide entrance for the picker on its outward stroke between the two bufiers.

The operation of the checking means will be obvious, for as the bufifer 5 is fixed on the lay the picker as it moves outward wipes over it and engages the movable buffer 16 and turns it on its fulcrum against the resistance of the spring s thereby checking the picker and preventing its rebound. By moving the stand 8 transversely of the lay the movable buffer is set more or less into the path of the picker to vary the resistance to its outward movement, and by moving the stand angularly a corresponding angular change in the position of the buffer 16 is effected. If the buffer is turned to the right from the position shown in Fig. 1, the impact of the picker thereupon will be more direct, with an increase in the checking action, while if the buffer be turned to the left the checking action will be eased up, so that the check can be readily adjusted to conform to light or heavy shuttles and high or low speed of the same. The device is strong and durable, simple in construction, and cheap to manufacture, and it is thoroughly efticient.

My invention is not restricted to the precise construction and arrangement herein shown and described, as the same may be varied or rearranged in different particulars by those skilled in the art without departing from the spirit and scope of my invention.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a loom, a lay having a shuttle-box, and a picker, checking means therefor mounted on the lay at the outer end of the shuttle-box and comprising a fixed and a yielding buffer between which the picker passes and with which it engages on its outward stroke, an upright fulcrum for and on which the movable buffer rocks and a device acting through the fulcrum to adjust the position of the movable bufl'er bodily with relation to the path of the picker.

2. In a loom, a lay having a shuttle-box, and a picker, checking means therefor comprising an elongated, flat-faced buffer fixedly mounted on the lay, and an opposite spring-controlled buffer having a longitudinally-convex face, and means to change the position of said movable buffer with relation to the path of the picker, the latter on its outward stroke en gaging and passing between the buffers.

3. In a loom, a lay having ashuttle-box, and a picker, checking means therefor mounted on the lay at the outer end of the shuttle-box and comprising an elongated, flat buffer adjust-ably mounted adjacent one side of the picker-path, an opposite, longitudinally-conveX buffer, an upright fulcrum for the outer end thereof, a spring to move the said buffer into the picker-path, a device to limit its inward movement, and means to adjust the fulcrum of said buffer to thereby vary its checking action upon the picker.

at. In a loom, a lay havinga shuttle-box, and a picker, checking means therefor mounted on the lay at the outer end of the shuttle-box and comprising a fixed bufi er and an opposite movable buffer, an adjustablestandhavingan upright stud at its outer end, on which the movable bufier is mounted to rock, and a spring to act upon the inner end of said buffer and normally maintain the same in the path of-and to be engaged by the picker on its outward stroke.

5. In a loom, a lay having a shuttle-box, a binder, a picker, and checking means therefor, said means comprising an upright, elongated buffer having a foot extended beneath the binder and adjustably secured to the lay, a movable buffer having a longitudinally-conveX friction-face normally in the path of the picker, a stand adjustably secured to the lay and on which the outer end of the movable buffer is fulcrumed, a spring to act upon the inner end of said buffer, and cooperating projections on the stand and buffer to limit springinduced movement of the latter.

6. In a loom, a lay having a shuttle-box, a binder, a picker, a fixedly-mounted, fiat-faced IIO buffer adjacent and parallel to one side of the said bufl'er into the picker-path, and means to pickenpath near its outer end, an opposite shift the fulcrum of the buffer and change its 15 movable bufi'er having a convex face in the position with relation to the picker-path, to path of the picker, a stand on which the outer thereby vary the resistance to the passage of 5 end of the said bulfer is fulcrumed, a spring to the picker between the bufi'ers.

act upon the free end of the bufi'er, and means In testimony whereot'l have signed my name to adjustably secure the stand upon the lay. to this specification in the presence of two sub- 20 7. In a loom, a lay having a shuttle-box, a scribing Witnesses.

binder, a picker, a fixedly-mounted buiferadrw y T IO jacent and parallel to one side of the picker- ARD S'UMI path near its outer end, an oppositely-located l \Vitnesses: movable bufi'er fulerumed at its outer end, a GEORGE OTIS DRAPER, spring to normally move the inner end of the" ERNEST \V. \Voon. 

